Year	Percent
1950	12.40146
1955	12.48512
1960	12.496
1965	12.46458
1970	12.40428
1975	12.31639
1980	12.20211
1985	12.13065
1990	12.11016
1995	11.90033
2000	11.68646
2005	11.47068
2010	11.41561
2015	11.75721
2020	12.40462
2025	13.09499
2030	13.68562
2035	14.19988
2040	14.68644
2045	15.43924
2050	16.37943
2055	17.40432
2060	18.32824
2065	19.06614
2070	19.71224
2075	20.30093
2080	20.90068
2085	21.4525
2090	21.90364
2095	22.26757
2100	22.58601